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What are the five engineering innovations that made the 747 the game-changer of aviation? What makes a power plant's giant turbine rotor blades spin at incredible speeds? What does it take to keep a floating city in perfect working order during critical overseas missions? Former NASA rocket engineer Chad Zdenek takes apart some of the world's mightiest machines and uncovers their secrets. Join him on his mission to go "under the hood" of these massive conquerors of air, land, and sea.